Snacks, pastries, etc.
Snacks: Such as potato chips, jelly, chocolate, candies, etc. These snacks are easy to share and are popular among junior high school students.
Pastries: such as cakes, egg tarts, mung bean cakes, etc., are easy to carry and are very popular among middle school students.
A super guide to play at Universal Studios, a summary of blood and tears after personal experience